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* old and bolonia study programme


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Plasma IGF-I concentrations in holstein-friesian heifers from birth to puberty
Tanja Peric, A. Prandi, M. C. Veronesi, Massimo Faustini, M. Probo, I. De Amicis, 2014, published scientific conference contribution abstract

Found in: osebi
Keywords: plazma, rojstvo, puberteta, telice
Published: 22.01.2015; Views: 3971; Downloads: 146
URL Fulltext (0,00 KB)

Plasma T3 and T4 concentrations in newborn calves
Tanja Peric, A. Prandi, M. C. Veronesi, M. Probo, Geert Opsomer, L. O. Fiems, 2013, published scientific conference contribution abstract

Found in: osebi
Keywords: teleta, plazma, T3, T4
Published: 10.07.2015; Views: 4205; Downloads: 138
URL Fulltext (0,00 KB)

Cortisol hair and nails concentrations in newborn puppies and kittens
Tanja Peric, M. Montillo, A. Prandi, M. C. Veronesi, T. Meloni, Alessandro Rota, 2012, published scientific conference contribution

Found in: osebi
Keywords: psi, mačke, mladički, dlaka, kortizol, kremplji
Published: 10.07.2015; Views: 4739; Downloads: 27
URL Fulltext (0,00 KB)

IGF-I, NEFA and cortisol concentrations in fetal fluids of dogs and cats
Tanja Peric, A. Comin, M. C. Veronesi, T. Meloni, Alessandro Rota, MC Pisu, 2012, published scientific conference contribution

Found in: osebi
Keywords: psi, mačke, fetalne tekočine, hormoni, presnovni dejavniki
Published: 10.07.2015; Views: 4725; Downloads: 32
URL Fulltext (0,00 KB)

IGF-I, NEFA and cortisol plasma concentrations in newborn donkey foals
Tanja Peric, M. Montillo, M. C. Veronesi, Alessia Gloria, Alberto Contri, M. Sergiacomo, 2013, published scientific conference contribution abstract

Found in: osebi
Keywords: žrebeta, kortizol, osli
Published: 16.06.2016; Views: 3008; Downloads: 16
URL Fulltext (0,00 KB)

Plasma cortisol concentrations in Holstein Friesian and Belgian Blue newborn calves born by different types of delivery
L. O. Fiems, M. C. Veronesi, Geert Opsomer, Tanja Peric, M. Montillo, M. Probo, 2016, published scientific conference contribution abstract

Abstract: Cortisol (C) is a major stimulus for fetal and neonatal lung maturation and for surfactant production. Neonatal calves born by caesarean section (CS), particularly the double-muscled Belgian Blue (BB), are more proned to develop the respiratory distress syndrome (Cambier et al. 2002 Vet Res 33, 283–290; Danlois et al. 2003 Vet J 165, 65–72). The aim of this study was to investigate C plasma levels in 15 Holstein Friesian (HF) newborn calves born by spontaneous vaginal delivery (VD) and in 25 BB newborn calves born by elective CS. Blood samples were taken at 10, 20, 30 min and at 6, 24 h after birth and at 7 and 14 days of age. Plasma C concentrations were analyzed by RIA. Statistical analysis evidenced an influence of both time (p < 0.05) and group (p < 0.0001) on C concentrations. In agreement with previous studies, high C levels at birth were followed by a reduction at 6 h and by a further decrease on day 7 after birth in both groups. Cortisol concentrations were different between BB and HF calves, with significantly higher levels in HF calves. These findings are in agreement with studies in newborn babies, while previous studies on calves mentioned no differences in C levels between calves born without assistance vs. calves born by CS. The present results suggest that both breed and type of delivery are associated with plasma C levels in the newborn calf.
Found in: osebi
Keywords: Plasma cortisol, Holstein Friesian, Belgian Blue, calf, delivery
Published: 15.11.2016; Views: 3704; Downloads: 0
.pdf Fulltext (3,13 MB)

Luteal activity and effect of dietary energy restriction on follicular development in lactating cows
Antonella Comin, Tanja Peric, M. Montillo, Maria Cristina Veronesi, Vittorio Marchi, Alberto Cappa, Alberto Prandi, 2017, original scientific article

Abstract: The aim of this research has been to evaluate the presence of anomalies in the ovarian cycle activity during postpartum and to verify whether 72-hr dietary fasting during the dominance phase, the phase before ovulation, might modify the ovarian follicle population. The presence of anomalies in ovarian cycle activity has been evaluated in 30 Italian Friesian cows starting from 20 days postpartum until 211 days of lactation. Long oestrus and brief dioestrus or scarce luteal activity have been the main anomalies found through measuring progesterone concentrations in the whey. Until 100 days of lactation, the BCS values of the problematic animals have been significantly lower than those in animals with normal ovarian activity. After 100 days of lactation, the ovarian anomalies continued to appear despite the fact that all the animals have reached comparable BCS values. Starting from the results of this trial, the effect of 72-hr dietary fasting on dominant follicles has been studied in six cows. Ultrasonography revealed that the diameter of the follicles at 71 days postpartum has been significantly lower than at 181 days. A 72-hr dietary restriction at 101 and 211 days postpartum did not affect the size of the dominant follicle. However, at 101 days postpartum, half of the animals presented follicular cysts. The effect of fasting differed if the animal has been in early postpartum or 211 days of lactation. Further researches are necessary to understand how different metabolic conditions can modify the follicular population but on the other hand the study shows the utility for farmers and field veterinarians of monitoring the resumption of the ovarian cycle postpartum through the whey progesterone concentrations.
Found in: osebi
Keywords: dairy cow, cyclic activity, follicles, fasting
Published: 06.04.2017; Views: 3593; Downloads: 0
.pdf Fulltext (651,67 KB)

Hair cortisol and testosterone concentrations and semen production of Bos taurus bulls
Mirco Corazzin, Maria Cristina Veronesi, Antonella Comin, Marta Montillo, Tanja Peric, Giuseppe Stradaioli, Alberto Prandi, 2017, original scientific article

Abstract: The experiment was aimed to evaluate the usefulness of hair cortisol concentrations (HCC) in revealing the activation of the hypothalamic-pituitary-adrenal (HPA) axis due to the passage of young bulls from genetic rearing stations to artificial insemination (AI) centre and the influence of this passage on hair testosterone concentrations (HTC). Hair samples on 33 yearling bulls were collected at the time of arrival (ST1) to the AI centre and 3 more hair samples (ST2, ST3, ST4) were collected at monthly intervals. After the end of quarantine each animal was submitted to the standard procedures for collection and production of semen. Overall HCC were significantly affected by period of collection (p<.01). In particular, HCC was higher in samples obtained after finishing the quarantine period (ST2) compared with those obtained on ST1. After ST2, the HCC decreased reaching at ST4 a value similar to that recorded at ST1. An effect of sampling time on HTC was not found (p>.05). The effect of breed was observed only for HTC that was higher in PRI than BS (p<.01). The HCC group have not influenced the semen variables (p>.05). On the contrary, the effect of breed was evident. The results of this study replicated the effects of a major environmental stressor on mean cortisol concentrations assessed in hair, and add to the growing body of evidence that HCC is an effective and simply collected marker for long-term activity of the HPA system in response to persistent environmental challenge.
Found in: osebi
Keywords: Hair, bulls, cortisol, testosterone, semen
Published: 20.03.2017; Views: 4726; Downloads: 0
.pdf Fulltext (1,71 MB)

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